Hobart Welding Products OM-279 Specifications, Dimensions And Weight, Duty Cycle And Overheating

SECTION 2 – INSTALLATION

2-1. Specifications

	Amperes Input at Rated Load										Maximum
										Rated	Open-
		Output 60 Hz					Type of	Plasma	Rated
Model										Cutting	Circuit
							Output	Gas	Output
	200 V	230 V	460 V	575 V	KVA	KW				Capacity	Voltage
											DC
Single-	42.30	36.80	18.40	––	8.49	6.55	Direct		50 A @
Phase	(3.40*)	(2.95*)	(1.50*)		(0.68*)	(0.20*)	Current,	Air Or		0.7 in
									110 Volts		280
							Straight	Nitrogen		(18 mm)
		18.40	9.20	7.40	7.32	6.60			DC, 60%
3-Phase	––						Polarity	Only		At 10 IPM
									Duty Cycle
		(2.13*)	(1.07*)	(0.85*)	(0.85*)	(0.32*)	(DCEN)

*While idling

2-2. Dimensions And Weight

C

B

A

Ref. ST-801 454-B

Dimensions

A36-3/4 in (934 mm)

B24-1/2 in (622 mm)

C 21 in (533 mm)

Weight

Single-Phase Models: 147 lb (66 kg)*

Three-Phase Models: 168 lb (76 kg)*

*Without Torch

2-3. Duty Cycle And Overheating

Duty Cycle is percentage of 10 min- utes that unit can cut at rated load without overheating.

If unit overheats, thermostat(s)

60% Duty Cycleopens, output stops, and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or duty cycle before cutting.

Y Exceeding duty cycle can damage unit and void war- ranty.

6 Minutes Cutting 4 Minutes Resting

Overheating

0	A
	15
	OR
Minutes	Reduce Duty Cycle

duty1 4/95

OM-279 Page 9